Save 'unique Id' as session variable in react native
You can add the unique id using AsyncStorage
like this :
import { AsyncStorage} from 'react-native';
AsyncStorage.setItem('Key Name', uniqueId)
And after that you can get from other component like this :
import { AsyncStorage} from 'react-native';
AsyncStorage.getItem('Key Name').then((value) => console.log(value))
For details you can read from the documentation. I hope this answer can help you.